• Aluminum housing provides superior resistances to corrosion, even in harsh environments.
• Factory-filled with premium Mobil Glygoyle 460 polyalkalene glycol lubricant – USDA Class H1 approved.
• Large oil capacity provides positive splash lubrication and superior cooling capability.
• Viton® double lip seals provide extended life through increased resistance to high temperature, abrasion and chemicals.
• Oversized high-speed bearings, positively retained for frequent reversing and start/stop cycles.
• Tapered roller bearings on output shaft for high overhung and thrust load capacities.
• The unique quill seal guard protects the input seal from damage during motor installation.
• All units are 100% run and leak tested at the factory to insure that you receive the highest quality product.
• Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles.
• Mounting dimensions are interchangeable with most industry standard reducers.

Dimensions

B	5.75
BE	0.38 in
BF	0.41
O	2.29 in
G	1.63
L1	4 in
J	4.13 in
F	3.25
T	1
K	2.06 in
AK	4.5
D	2.63
AJ	5.88
I	3.4 in
H-Tap size	3/8-16 in
BD	6.5
O*	2.09 in
TAP Depth	0.87 in
C	6.88 in
N	4.68
LM	6.26
Center Distance (in)	2.06 in
U	0.625 in
A	3.91

Technical Specifications

Output Shaft Orientation	R
Frame Size	140TC
Input RPM	1,750
Reducer Style	Worm - Right Angle
Output RPM	43
Ratio	40:1
Output Key	1/4 x 1.44
Keyway	3/16 X 3/32
Input Style	Flexible Coupling Input
Output HP	0.674
Assembly	BM-R
Input HP	0.916
Series	EL Series - Aluminum Worm Gear Reducers
Overhung Load	1,315
Reducer	Worm - Right Angle
Series Code	EL
Product Type	Right Angle
Mounting Style	Base
Motor Frame Size	140
No. of Gear Reductions	Single
Model Code	BM821
Product Line	EL Series - Aluminum Worm Gear Reducers
Output Style	R
Thrust Rating - output shaft	1144
Output Diameter (in)	1.000 in
Series Style	EL-BM-R
Input Diameter (in)	0.625 in
Output Shaft Assembly Code	R
Input HP @ 1750 RPM	0.916
Shaft Seal Material	Viton
Service Factor	1
Input Keyway	3/16 x 0.500 in
Center Distance (in)	2.06
Input Keyway (C Face)	3/16 x 3/32
Gear Type	Worm
Ratio Range	40:1
Input Bore (C Face)	0.875
Reduction	Single
Output Shaft Direction	Right
Output Torque Rating (in-lb)	971 in/lbs
Overhung Load Rating (Output Shaft(lb))	1,315 lb
Output Shaft	Solid Shaft
Housing Material	Aluminum

General Specifications

UPC	662959007693
Weight	20.00 LB
Packaged Length	10.69 IN
Packaged Width	9.06 IN
Packaged Height	10.50 IN